Makefile

# prevent run if docker not found
ifeq (, $(shell which docker))
	$(error "Binary docker not found in $(PATH)")
endif

override APP_NAME=slack-duty-bot
override MOD_NAME=github.com/insidieux/${APP_NAME}
override GO_VERSION=1.13
override CGO_ENABLED=0

# build go binary variables
GOOS?=$(shell go env GOOS || echo linux)
GOARCH?=$(shell go env GOARCH || echo amd64)

# docker build variables
DOCKER_NAMESPACE?=
DOCKER_IMAGE=${DOCKER_NAMESPACE}/${APP_NAME}
DOCKER_TAG?=1.0.0
DOCKER_USER?=
DOCKER_PASSWORD?=

all: build

init:
	docker run --rm \
		-v ${PWD}:/project \
		-w /project \
		-e GO111MODULE=on \
		golang:${GO_VERSION} \
		go mod init ${MOD_NAME} || true

vendor: init
	rm -r vendor || true
	docker run --rm \
		-v ${PWD}:/project \
		-w /project \
		-e GO111MODULE=on \
		golang:${GO_VERSION} \
		go mod vendor

test: vendor
	docker run --rm \
		-v ${PWD}:/project \
		-w /project \
		-e GO111MODULE=on \
		golang:${GO_VERSION} \
		go test -mod vendor -v -race ./...

build: vendor
	rm -f ${APP_NAME} || true
	docker run --rm \
		-v ${PWD}:/project \
		-w /project \
		golang:${GO_VERSION} \
		env GOOS=${GOOS} GOARCH=${GOARCH} CGO_ENABLED=${CGO_ENABLED} GO111MODULE=on go build -mod vendor -o ${APP_NAME} -v

image: build
	docker rmi ${DOCKER_IMAGE}:${DOCKER_TAG} || true
	docker build \
		--build-arg APP_NAME=${APP_NAME} \
		-f .docker/Dockerfile \
		-t ${DOCKER_IMAGE}:${DOCKER_TAG} \
		.

push: image
	docker login docker.io -u ${DOCKER_USER} -p ${DOCKER_PASSWORD}
	docker push ${DOCKER_IMAGE}:${DOCKER_TAG}

.PHONY: all init vendor test build image push